Omphalomesenteric duct remnant

Epidemiology and Etiology:

· Remnant of the duct connecting the yolk sac to the gut in embryonic life

Common sites:

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Gross features:

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Histologic features:

· Single layer of cuboidal to columnar, mucinous epithelium

· Intestinal epithelium

· Gastric epithelium

· Thin coat of smooth muscle maybe

· Pancreatic tissue maybe

· Vitelline vessel remnants maybe

Immunophenotype:

Marker:

Sensitivity:

Specificity:

Molecular features:

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Other features:

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References:

· Silverberg SG, DeLellis RA, Frable WJ, LiVolsi VA, Wick MR. Silverberg's Principles and Practice of Surgical Pathology and Cytopathology: 2-Volume Set. 4th ed. Churchill Livingstone; 2005:2656.